Resident Population in Bayfield County, WI was 16.76900 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Bayfield County, WI reached a record high of 16.76900 in January of 2023 and a record low of 11.68300 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Bayfield County, WI - last updated from the United States Federal Reserve on May of 2024.